Where does “leonem” come from?

leonem (Latin) comes from Ancient Greek Λέων, from Ancient Greek λέων — lion; Leo, the zodiacal sign; lionheart, savage.

Ancestry of “leonem”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Λέων	lion
2	Ancient Greek	λέων	lion; Leo, the zodiacal sign; lionheart, savage